Why do fish have their mouths open when they die

When the fish is about to die, they are short of oxygen and urgently need oxygen, so they open their mouths wide to inhale more oxygen. The fish opens its mouth to suck the water in, and then drains the water from the gills, while the gills filter oxygen into the body, and the fish is breathing.

Extended information: The efficacy of fish: Autumn and winter are good times for the infirm to take supplements, and fish is a good aquatic food for tonic, which is not only delicious, but also has high nutritional value.

Its protein content is twice that of pork, and it is a high-quality protein with a high absorption rate in the human body. Fish is rich in thiamine.

Riboflavin, niacin, vitamin D

and a certain amount of minerals such as calcium, phosphorus, iron, etc.

Although the fat content of fish meat is low, the fatty acids in it have been proven to lower blood sugar, protect the heart and prevent cancer. Vitamin D, calcium, and phosphorus in fish are effective in preventing osteoporosis.

The fat of fish contains unsaturated fatty acids, which have anti-atherosclerotic effects, so it is beneficial for the prevention and treatment of cardiovascular and cerebrovascular diseases, enhancing memory, protecting eyesight, and eliminating inflammation.

However, the more fish you eat, the better, because the fatty acids of fish contain a lot of eicosapentaenoic acid, which inhibits platelets.

Long-term excessive consumption will reduce platelet cohesion and cause various spontaneous hemorrhages, such as cerebral hemorrhage. Wait.

This is because fish rely on their gills to absorb oxygen for their lungs, which excretes waste and carbon dioxide from their mouths. When it is dying, its gills do not breathe, and its mouth opens and stops moving while it is desperately pumping oxygen.

If the fish were alive, the mouth should be neither closed nor open, but closed one by one. If you say what the mouth of "fresh dead fish" will look like, I personally think it should have nothing to do with freshness, right? It mainly depends on the state of the mouth of the fish at the time of death; If you have been dead for too long, the mouth should be restored to its most natural appearance—closed; Because it requires muscle force to maintain when it is opened, the muscle force is lost when the fish dies, and the mouth will naturally restore.

They are ventilated, and they also need a certain amount of oxygen when they are in the water. Yes, they will die very quickly in the absence of oxygen.

When the fish opens its mouth on the surface of the water, it breathes, and there is no way for the fish to drown, because the fish itself is an animal that lives in the water.

in the absorption of some oxygen. Yes, as long as they are not given enough oxygen, they will die.

This is because it is very normal for a fish to breathe in this way on the surface of the water and not drown the fish.

The fish opens its mouth to the surface of the water, which is caused by the lack of oxygen in the water, and then the fish will float to the surface, the mouth will open and close, and sometimes it will make a "horn, horn" sound, trying to breathe oxygen from the empty oxygen, which can also be understood as a distress signal from the fish to the owner.

How to avoid floating heads: Pay attention to the stocking density of fish when raising fish. Because fish like a large activity space, beginners often see the fish they like to buy, rarely take into account how many fish can be raised in the tank, so it leads to the situation that there are more fish and less water, and then the fish will float to absorb oxygen, so when raising fish, we must pay attention to 3 liters of water to raise a centimeter-long fish is more appropriate.

There are several possible reasons why a fish floats on the surface of the water and opens its mouth:

1.Lack of oxygen: If there is not enough oxygen in the water, the fish will float to the surface to breathe. At this point, the water needs to be changed immediately or oxygen added.

2.Poor water quality: If the water quality is not good, it can cause discomfort for the fish and thus float to the surface. At this time, it is necessary to clean up the impurities in the fish tank and keep the water clean.

3.Improper feeding: If overfed or if the food is not suitable, it can cause the fish to float to the surface. At this point, the feeding needs to be stopped and the fish should be given some medicine to help with digestion.

4.Display behavior: Some special fish, such as sawfish, sharks, etc., may constantly open their mouths on the surface of the water to catch prey or to deter enemies.

In short, if the fish floats on the surface of the water and opens its mouth, the shed source needs to carefully analyze the cause and take corresponding measures according to the specific situation.

The fish keep opening their mouths while staring at the surface of the water, which slips mainly to breathe and find food, and may also be related to the lack of oxygen in the water.

The fish keeps opening its mouth on the surface of the water to breathe. Unlike humans, fish do not have lungs, they breathe by gills. The gills are a respiratory organ that is located on either side of the head of a fish.

When the fish opens its mouth, water enters the mouth of the fish, passes through the gill plates, oxygen is taken in, and carbon dioxide is expelled. In this way, the fish is able to breathe in the water.

However, the fish keep opening their mouths on the surface of the water, which may also be related to the lack of oxygen levels in the water. In the water, oxygen is necessary for the fish to breathe, and if the oxygen level in the water is insufficient, the fish will feel suffocated and uncomfortable. And the fish keeps opening their mouths on the surface of the water, perhaps to absorb as much oxygen as possible to meet their own breathing needs.

In addition, the fish keep opening their mouths on the surface of the water, which may also be in search of food. Some fish will open their mouths on the surface of the water and wait for insects or other small animals to fall into their mouths. This behavior is called "swallowing air".

Measures to deal with fish opening their mouths on the surface of the water

Increase the oxygen content in the water: The lack of oxygen in the fish can be improved by increasing the oxygen content in the water. The oxygen content in the water can be increased by increasing the water flow, increasing the water surface area, increasing the plants in the water, etc.

Change the water quality: If the water quality of the fish tank is not good, it will also lead to a lack of oxygen for the fish, and the water quality needs to be changed regularly.

Clean the fish tank: The dirt in the fish tank will consume oxygen, and regular cleaning of the fish tank can reduce the accumulation of dirt and improve the water quality.

Reduce the number of fish: If there are too many fish in the tank, it will cause the fish to lack oxygen, and the number of fish needs to be reduced appropriately.

Increase the size of the fish tank: If the fish tank is too small, it is also easy to cause the fish to lack oxygen, so you need to increase the size of the fish tank to provide enough space for the fish to swim.

The causes of death are many.

Observe whether the body of the dead fish has symptoms of white membrane cotton mouth, or rotten fins, bleeding symptoms, these conditions are caused by the water quality is not up to the requirements, if the dead fish belly is obviously swollen, yellow or green, it may be the death caused by enteritis ascites caused by unclean bait; If the fish body is not damaged and the body color is normal, it may be the hypoxic death caused by the high feeding density.

There may be several reasons for the death of small aquarium fish with their mouths open:

1.Death due to lack of oxygen: At the time of death, the mouth is wide open, the gills are broken, and some fish will have symptoms of bleeding in the jaw and body surface.

2.Poor water quality leads to death: Poor water quality can lead to poor living conditions for fish, and fish are prone to illness, which can lead to death.

3.Death due to inadequate or nutrient feed: If the feed is inadequate or the feed is undernourished, the fish may die due to starvation or malnutrition.

In short, in order to avoid the death of small ornamental fish with their mouths open, it is necessary to maintain good water quality, provide sufficient feed, and pay attention to the growth of the fish, and take timely measures to prevent accidental death.

Causes of mouth opening after death in fish:

1. Most of the dead fish's mouth opening is caused by lack of oxygen, and the symptoms of death of general fish due to hypoxia are that the mouth is wide open, the gills are ruptured, and some fish will also have symptoms of jaw and body surface bleeding;

2. If the fish dies for too long, the muscle strength of the mouth of the dead fish is lost, and the mouth shape undergoes restorative deformation, causing the mouth to open.

When there is a lack of oxygen in the water, the fish will float to the surface and try to breathe oxygen from the empty oxygen.

The main causes of hypoxia in water are:

1. Due to weather conditions, the air pressure decreases before rainfall, and the oxygen content in the water is low, and the fish will float to the surface, and you can use an aerator or aerator to increase oxygen.

2. The breeding density is too large, or the deterioration of the water quality causes the lack of oxygen in the water, if the fertilizer is too much in the production, it may cause the water to be eutrophic, resulting in the decline of water quality, and thus the lack of oxygen in the water.

3. The old mud pond rises up under low pressure, resulting in the lack of oxygen in the water and the hand, at this time the situation is more dangerous, and the water must be changed immediately, otherwise the pond will be flooded, and the fish will die in large numbers.

4. Oil or detergent is poured into the water to isolate the air from the water, and the oxygen cannot be dissolved in the water, which will lead to a lack of oxygen in the water.

What foods do fish like to eat?

Fish are mainly herbivorous and omnivorous. Omnivorous fish like to eat a lot of food, and the common food is small insects, such as paramecium and small insects that fish eat.

Summary. Hello dear, I'm glad to answer for you, why does the fish's mouth keep moving? The fish's mouth is constantly moving, breathing.

Some species of fish breathe while the water entering the mouth flows through the gills to filter plankton from the water, forming a food mass and then swallowing the belly. The respiratory organ of fish is the gills, and the purpose of opening the mouth is to let the water flow through the mouth and then discharge from the gills, and the gills have gill filaments in them, and there are a large number of xue tubes in them, and when the water is filtered, gas exchange will be carried out to obtain oxygen. In addition, there are also some fish that can breathe with auxiliary organs, such as **, intestines, supragill organs, etc.

Hello dear, I'm glad to answer for you, why does the fish's mouth keep moving? The fish's mouth is constantly moving, breathing. Some species of fish breathe while the water entering the mouth flows through the gills to filter plankton from the water, forming a food mass and then swallowing the belly.

The respiratory organ of fish is the gills, and the purpose of opening the mouth is to let the water flow through the mouth and then discharge from the gills, and there are gill filaments in the gills, and there are a large number of xue tubes in them, and when the water is filtered, gas exchange will be carried out, so as to obtain an oxygen source and gas. In addition, there are also some fish that can use the auxiliary Zen wisdom to help organs breathe, such as **, intestines, supragill organs, etc.

If the oxygen level in the water is low, the fish will breathe in order to take in more oxygen, and this happens with the fish floating head, which gathers on the surface of the water and breathes in the place where the water and air come into contact. If a fish breathes heavily in the lower layers of the water body, it is likely that its gills will be sick, possibly caused by bacteria or infestations, which will affect the gas exchange of gill filaments, as well as rubbing against the tank or shaking its fins.